Buttoned up
Mum and buttoned up are semantically related in quiet topic. In some cases you can use "Mum" instead an adjective "Buttoned up", when it comes to topics like silent, without ability to talk.
Mum
Mum adjective - Deliberately refraining from speech.
Buttoned up and mum are semantically related in silent topic. Sometimes you can use "Buttoned up" instead an adjective "Mum".
Mutual synonyms
Cite this Source
Mum and Buttoned up. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/buttoned_up/mum
Buttoned up & Mum. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/buttoned_up/mum>.
Mum or Buttoned up. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/buttoned_up/mum.
Google Ngram Viewer shows how "buttoned up" and "mum" have occurred on timeline